Ageratina altissima 'Chocolate' Ageratum x 'Agbic (Artist® Blue Violet)'
Ageratum x 'Agmontis (Artist® Purple)' Ageratum x 'Agros (Artist® Rose)'
Ageratum x 'Agsantis (Artist® Blue)' Aglaonema commutatum
Aglaonema modestum Aglaonema nitidum
Aglaonema nitidum 'Emerald Beauty' Aglaonema nitidum 'Emerald Star'
Aglaonema nitidum 'Green Lady' Aglaonema nitidum 'Mary Ann'
Aglaonema nitidum 'Queen of Siam' Aglaonema nitidum 'Rhapsody in Green'
Aglaonema nitidum 'Silver Bay' Aglaonema nitidum 'Silver King'
Aglaonema nitidum 'Silver Queen' Aglaonema pictum
Aglaonema romana Agrimonia repens
Agrostis x 'Pennlinks' Ajania pacifica
Ajania pacifica 'Gold & Silver' Ajania pacifica 'Pink Ice'
Ajania pacifica 'Yellow Splash' Ajuga 'Gaiety'
Ajuga 'Royalty' Ajuga 'Tropic King'
Ajuga australis Ajuga genevensis
Ajuga pallisandra Ajuga pyramidalis 'Metallica Crispa'
Ajuga reptans Ajuga reptans 'Alba'
Ajuga reptans 'Atropurpurea' Ajuga reptans 'Binblasca (Black Scallop)'
Ajuga reptans 'Bronze Beauty' Ajuga reptans 'Burgundy Glow'
Ajuga reptans 'Catlin's Giant' Ajuga reptans 'Chocolate Chip'
Ajuga reptans 'Crispa' Ajuga reptans 'Jungle Beauty'
Ajuga reptans 'Metallica' Ajuga reptans 'Pink Surprise'
Ajuga reptans 'Purple Torch' Ajuga reptans 'Purpurea'
Ajuga reptans 'Renick' Ajuga reptans 'Rosea'
Ajuga reptans 'Silver Beauty' Ajuga reptans 'Silver Queen'
Albuca canadensis Albuca spiralis
Alcantarea imperialis Alcea x 'Summer Memories'
Alcea ficifolia Alcea rosea
Alcea rosea 'Chater's Double' Alcea rosea 'Creme de Cassis'
Alcea rosea 'Indian Spring' Alcea rosea 'Nigra'
Alcea rosea 'Peaches 'n' Dreams' Alcea rosea 'Powder Puff'
Alcea rosea 'Queeny Purple' Alcea rosea 'Summer Carnival'
Alcea rosea 'The Watchman' Alcea rugosa
Alchemilla alpina Alchemilla conjuncta
Alchemilla erythropoda Alchemilla mollis
Alchemilla mollis 'Thriller' Alchemilla xanthochlora
Alisma plantago-aquatica Allium 'Globemaster'
Allium acuminatum Allium aflatunense
Allium ampeloprasum Allium bucharicum
Allium caeruleum Allium cepa
Allium cepa 'Kelsae Sweet Giant' Allium cernuum
Allium christophii Allium flavum
Allium giganteum Allium karataviense
Allium moly Allium oreophilum
Allium pyrenaicum Allium rebdonense
Allium schoenoprasum Allium schoenoprasum 'Pink Feathers'
Allium schoenoprasum 'Schnittlauch' Allium schubertii
Allium senescens var. glaucum Allium sikkimense
Allium sphaerocephalum Allium stellatum
Allium tanguticum Allium tuberosum
Allium validum Allium vineale